Technically, there is no official UMD or digital ISO file from the original developers, SYBO and Kiloo. However, players looking for this experience typically find it in three ways:

: Subway Surfers is designed for a vertical (portrait) screen, while the PSP features a fixed horizontal (landscape) 16:9 display. Better Alternatives for Handheld Play

That said, I can write a inspired by that search query — one that explores the dangers of shady downloads while keeping the spirit of a chase, just like the game itself.